Cross-wound warp beam



Jan. 5, 1937. G. KAHLISCH GROSS WOUND WARP BEAM Original Filed July I1, 1935 2- Sheets-Sheet l G. KAHLISCH 2,066,888

CROSS WOUND WARP BEAM Jan. 5, 1937.

Original Filed July 11, 1933 2 Sheets-Sheet 2 3a 1 I 45 46 @HHUHHII I 4 a 'EE.1-Df:jim1'.': I .9

patented Jan. 5,1937

UNITEDSTATES PATENT OFFICE assignor to W. Schlafhorst & 00., Gladbach Rheydt, Germany, a corporation of Germany Original application July 11, 1933, Serial No. 679,957. Divided and this application October 4, 1935, Serial No. 43,615. In Germany August 17, 1932 2 Claims. (Cl. 2837) The wet treatment of yarn, that is bleaching, pp cation, Ser. No. 679,957, filed July 11, 1933. dyeing and the like, on a perforated beam is gen- The invention will be described in detail with erally known. in itself. However, by employing r f r ce to th mp ny r wings, Wherebeams of the ordinary winding-formation, the" dyeing-through is irregular, because it is difficult 1 is a som what di ramm tic si el v 5 to carry out an evenly loose formation of the tion, w h p r n i n, of a machine for yarn-body. It has therefore been attempted to W ng a Warp beam in accordance with my inwind the warp beams in a self-supporting crossvention.

wound cheese shape in order thereby to obtain ig. 2 is a plan V w Of the same'maehine, a porous yarn body. But such warp beams of Fig. 3 is a fragmentary front elevation of the 10 the customary cross-wind show again the drawsame chine, back that the two sides of the yarn-body taper Fi 4 is a p View of a mod fied form of maoli owing to the pronounced crossing of the Chine or W d g a Wa p beam with conically threads. Asaconsequence, theoutermost threads shaped ends in accordance with my invention, coming to rest on a constantly decreasing diamand 5 eter, become shorter and shorter, and break when Fig. 5 is a detail front elevation of the comb running off the beam in consequence of the inadjusting mechanism of the machine shown in creasing tension.

The present invention has for its object to do R r n fir to Fi 1 the threads to be away with this drawback of self-supporting wound are shown at I and the warp beam body 20 cross-wound warp beams by carrying out the at 2. A guide comb 3 is mounted on a comb rod winding-on at the sides of the yarn-body more 4 provided with fingers 4a; engaging a cam 5 for densely, so that the yarn-body is cylindrical up t av s g the guide comb. The cam 5 is mountto the ends, or only very slightly tapered at the ed upon a shaft 5a. The guide comb and the 5 sides, so as to show no drawbacks in practice. shaft 5c are supported in a cradle comprising This can be obtained in several fashions, either side arms 6, I which are susceptible of being balby running-on the threads towards the sides of anced by counterpoise weights (not shown). the yarn body in the full width of the traverse The cam shaft 5a carries a loose bush 33 fitted of the guiding comb, but in greater density in with a wire loop 32 having lateral stops 32a,

the comb,--or by opposing to the outer threads 3% for the reduction of the traverse of the 30 between the guiding comb and the running-on threads adjacent the edges of the warp beam. point a stationary or movable resistance so that The bush 33 with the wire loop 32 is traversed the threads do not run-on in the full width of on the cam shaft 5a, by means of a separate the traverse at the sides of the yarn body, but lever arrangement 34, 35. The traversing move- 35 with greater density. ment is derived from the comb rod 4 and reduced 35 An arrangement for denser winding-on at the as against the traverse of the comb, by means of two sides of the yarn body, represented and dethe relation of the lever 35 to the lever 34. The scribed in the patent application Serial No. degree of shortening can be adjusted by shifting 606,240, filed April 19, 1932, consists in reducing the pivot 36 in the slot of the lever 34. More- 40 the distance of the comb teeth towards the ends over, the lever 34 may be of a different order 40 of the yarn body in the full width of the comb and may be pivotally connected at its end to traverse, so that the threads come to lie closer lever 35, which in turn is pivoted to the bush 33. and closer together toward the sides of the yarn The wire loop 32 with its stops 32a and 321) body therefore constantly has a shorter traverse than The same object can be obtained by leaving the comb 3. As a consequence, the outer threads 45 the distance of the comb-teeth unchanged, and are prevented from making the full traverse of increasing instead the number of ends in each the comb and they are consequently crowded dent on either side of the yarn body in the apas shown particularly in Figs. 2 and 3, so that proximate width of the comb traverse, so that by the yarn body receives a cylindrical shape up to way of example there are two ends in a dent over the ends. 50 the cylindrical part of the yarn-body, three ends Figs. 4 and 5 show another embodiment of a in the first dent of that part of the comb where warping frame for the production of cross-wound the yarn body would otherwise begin to taper-off, dyeing beams similar to the one shown in Figs. l-3, four ends in the next dent, and so on. but slightly changed in form to make them suit- This application is a division of my co-pending able for very smooth threads, such as silk, rayon, 55

double and twisted yarns and the like. In these kinds of yarns even the most pronounced crossing is at times unable to do away with the danger of cobwebbing of the outer threads at the ends of the yarn-body. In order to prevent this, the yarn-body is made cone shaped at the outer ends similar to conical cross-wound cheeses. However, this shape cannot be obtained in the present case by means of the arrangement usual in cross winding frames for shortening the yarn traverse, because this is not possible in the case of the yarn sheets or ribbons. According to the invention, the Width of the yarn ribbon running-on is narrowed for each layer or group of layers, while the traverse of the Warping comb is not changed. In the illustrative machine shown in Figs. 4 and 5, a zig-zag comb 3a is used for the traverse of the yarn ribbon, this type of comb being known per se. The comb sections are in connection with the guide screw 4| having right and left hand threads. A pair of bevel wheels 42, 43 acts upon one end of the guide screw 4|. The shaft of the bevel wheel 43 carries a ratchet wheel 44 which is actuated by a pawl 45, the to and fro movement of which is derived from the traversing movement of the comb rod with reference to the bracket 46. Every double traverse of the comb rod 4 therefore causes the ratchet wheel 44 to be turned by a certain amount, depending on the pitch of the teeth and the number of teeth passed by the pawl on the return motion, so that the zig-zag comb can be correspondingly narrowed for the desired reduction of the width of the yarn sheet.

Fig. 4 shows that the cylindrical ends of the self-supporting yarn beam are obtained by feeding the threads more densely toward the sides of the yarn ribbon, as already explained above.

Having described my invention,

I claim:

1. A warp beam consisting of a plurality of threads cross-wound across the complete extent thereof, with the threads at the ends of the beam for the extent of the traverse thereof wound with a greater transverse density than those at the remainder thereof, the wound body being selfsupported, and having a true cylindrical lateral surface with no rounding of the ends.

2. A warp beam consisting of a plurality of threads cross-wound across the complete extent thereof, with the threads at the ends of the beam for the extent of the traverse thereof wound with a greater transverse density than those at the remainder thereof, the wound body being self-supported and having a true cylindrical lateral surface with no rounding of the ends, the end surfaces of the beam being conical.

GUSTAV KAHLISCH. 

